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Finding the Fourth Proportional to 6,657.72, 9,988.18 and 3,370.72

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Solution

The fourth proportional to 6,657.72, 9,988.18 and 3,370.72 is: 5,056.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,657.72 : 9,988.18 = 3,370.72 : x
  2. Step 2: Convert to fraction form
    6,657.72/9,988.18 = 3,370.72/x
  3. Step 3: Cross multiply
    6,657.72x = 9,988.18 × 3,370.72
  4. Step 4: Simplify right side
    6,657.72x = 33,667,358.09
  5. Step 5: Solve for x
    x = 33,667,358.09/6,657.72
  6. Step 6: Final answer
    x = 5,056.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.